Module: BSV::Auth::GetVerifiableCertificates

Defined in:
lib/bsv/auth/get_verifiable_certificates.rb

Overview

Utility module for retrieving verifiable certificates from a wallet.

Used during the certificate exchange phase of the BSV Auth peer protocol. Lists certificates matching the requested certifiers and types, then calls prove_certificate for each to obtain a verifier-specific keyring for selective field revelation.

Class Method Summary collapse

Class Method Details

.get_verifiable_certificates(wallet, requested_certificates, verifier_identity_key) ⇒ Array<VerifiableCertificate>

Retrieve verifiable certificates from a wallet for presentation to a verifier.

Parameters:

  • wallet (#list_certificates, #prove_certificate) —

    the subject’s wallet. Duck-typed — if the wallet does not respond to both methods, returns [].

  • requested_certificates (Hash) —

    with keys:

    • :certifiers [Array<String>] list of certifier public key hexes

    • :types [Hash] type (Base64 string) → array of field names to reveal

  • verifier_identity_key (String) —

    the verifier’s compressed public key hex

Returns:

  • (Array<VerifiableCertificate>) —

    list of verifiable certificates ready for presentation, or [] when the wallet does not support certificate operations

Raises:

  • (StandardError) —

    propagates unexpected errors (network failures, key derivation errors, etc.) to the caller — only UnsupportedActionError is swallowed



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# File 'lib/bsv/auth/get_verifiable_certificates.rb', line 27

def get_verifiable_certificates(wallet, requested_certificates, verifier_identity_key)
  return [] unless wallet.respond_to?(:list_certificates) && wallet.respond_to?(:prove_certificate)

  certifiers = requested_certificates[:certifiers] || requested_certificates['certifiers'] || []
  types_map  = requested_certificates[:types]      || requested_certificates['types']      || {}

  list_result = wallet.list_certificates(
    certifiers: certifiers,
    types: types_map.keys
  )

  certificates = list_result[:certificates] || list_result['certificates'] || []
  return [] if certificates.empty?

  certificates.map do |cert|
    cert_type = cert[:type] || cert['type']
    fields_to_reveal = types_map[cert_type] || types_map[cert_type.to_s] || types_map[cert_type.to_sym] || []

    prove_result = wallet.prove_certificate(
      certificate: cert,
      fields_to_reveal: fields_to_reveal,
      verifier: verifier_identity_key
    )

    keyring = prove_result[:keyring_for_verifier] ||
              prove_result['keyring_for_verifier'] ||
              prove_result[:keyringForVerifier]    ||
              prove_result['keyringForVerifier']   ||
              {}

    VerifiableCertificate.new(
      type: cert_type,
      serial_number: cert[:serial_number] || cert['serial_number'] ||
                     cert[:serialNumber] || cert['serialNumber'],
      subject: cert[:subject] || cert['subject'],
      certifier: cert[:certifier] || cert['certifier'],
      revocation_outpoint: cert[:revocation_outpoint] || cert['revocation_outpoint'] ||
                           cert[:revocationOutpoint] || cert['revocationOutpoint'],
      fields: cert[:fields] || cert['fields'] || {},
      keyring: keyring,
      signature: cert[:signature] || cert['signature']
    )
  end
rescue BSV::Wallet::UnsupportedActionError
  # Wallet does not implement certificate operations (e.g. ProtoWallet).
  # Return empty — the requesting peer enforces its own requirements independently.
  []
end